/Engine/Source/Runtime/SignalProcessing/Public/DSP/AudioFFT.h
Better optimized and hardward FFT implementations can be accessed through theFFFTFactoryclass in FFTAlgorithm.h. That class will attempt to return the best FFT algorithm implementation available for the givenFFFTSettings.
struct FFTTimeDomainData : public [Audio::FFTTimeDomainData_DEPRECATED](API\Runtime\SignalProcessing\DSP\FFTTimeDomainData_DEPRECATED)